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BROOKS & SOPER.

Patented July 9. 1867.

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OSCAR M. BROOKS, AND ROBERT W. SUPER, ()F JANESVILLE, YVISCONSIN LettersPatient No. 66,457, dated July 9, 1867. I

IMPROVED BURGLAR-ALARM.

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TO ALL WHOM 11 MAY CONCERN:

' Be it known that we, Oscan M. Buoons and Ronnnr W. Sornn, of the cityof Janesville, in the' county of Rock, and State of Wisconsin, haveinvented a new and improved Burglar-Alarm; and we do hereby declare thatthe following is a full and exact description thereof, reference beinghad to the accompanying drawings, in which- I Figiii'c 1 is aside viewof my burglar-alarm with the hammer down. 1

Figure 2 is a; side view, with the hammer cocked of the same, as usedwithout the barrel for igniting powder Figure 3 is a front or end viewof the same as it appears in fig. 1, but with the barrel (0) detached.

Figure 4 is a top view of the same as it appears in fig. 1, but with thehammer cocked.

Figure 5 is the same as fig. 2, but with the side plate or cap A removedso as to show interior constructior and arrangement.

Figure 6 is a cross-section through the cap and nipple.

Figure 7 is a top view of my bnrglar:alarm as it appears in fig. 2, withsection of door and lock, showing the manner of its attachment to thelatter; and I I Figures 8 and 9 show how the match-holder is attached tothe body of the alarm.

The nature of my invention consists, first, in attaching a burglar-alarmto a door-lock by means of a screw button, substantially as hereinafterdescribed; second, in constructing a burglar-alarm so that the movementby the burglar of a tripping-lever oi the alarm that is inserted in thekey-hole shall cause a match to be lighted and a cap or chargeof powderin an attached barrel to be fired, substantially as hereinafterdescribed; third, in supporting the match in an adjustable holder andlighting it directly by the fire of the cap or of the ignited powder inthebarrel, should the latter be used, substantially as hereinafterdescribed.

To enable others-skilled in the art to make and use my invention, Iwillproceed to describe its construction and operation.

It consists of a suitable case, A, having ordinarily an open sidecovered by a plate or cap, A, and provided with the ordinary appendagesof a gun-lock, as a hammer, B, main-spring Z, nipple s, for the cap b,dog H, and dog-spring n. This dog H has its upper end H turned up andbevelled as shown. The bevelled or inclined faces meeting in an obtuseangle play in a groove in the tripping-lever G that has its facessimilarly inclined, as shown in fig'. 4. The connection of the dog andtripping-lever, it will be seen, is'such that if the latter be pulledout, or shoved in, or turned, the upper end H of the dog is drivenforward, thus setting free the hammer B to fall upon the mph. The end ofthe tripping-lever that is inserted in the key-hole has a pin, Ii, fig.3 projecting, as shown, to cause the tripping-lever to be moved, andconsequently the alarm to be given at the slightest attempt to pick thelock. The lower part of the nipple sis expanded into or connected to ashort barrel C, that has an orifice, u, connecting with that in thecrown of the nipple, as shown in fig. 6. The part C is fitted to receivethe barrel O, asshown. The latter is provided with a vent, k, forallowing suificient fire to escape to light the match E. The match issupported in a holder, .D F, attached to the bottom plate of the case A,as shown in figs. 5, 8, and 9, sons to allow the match to be turnedfreely either to a position facing the vent 7c in the barrel whenthelatter is used, as shown in figs. 1 and 4, or facing the orifice u inthe part C when the barrel is not used, as shown in figs. 2, 3, 5, and6. To hold my device in the key-hole of the door or lock 1 provide itwith a part, at, that screws in and through the case A and terminates,as to its inner end, in a head, 2', having two lateral spurs projectingfrom its opposite sides after the manner of the ordinary door-button.These spurs, when the part is screwed out to the proper distance, isdesigned to catch within the lips a of the key-hole L or of thelock K,as shown in fig. 7, and so hold the whole device in the desiredposition.' In fig. 7 K represents the lock and I a section of the door.

To operate my device it is only necessary to place the match Ein theholder Rand then turn it to the position shown in figs. 1 and 4, or thatshown in figs. 2, 3, 5, and 6-, as the barrel 0 may or may not be used.Then, having cocked the hammer B, placed a cap, 6, upon the nipple s,and inserted the tripping-lever G in the key-hole of the door to beguarded, and having secured the device in that position by turning thescrew-button d i, as shown in fig. 7, we may placidly await the attemptto pick the lock that shall move the tripping-lever G and thus releasingthe hammer cause the latter to fire the cap or the charge in the barreland ignite the match, so as to alarm the burglar and arouse theoccupants of the room, andat the same time afford the latter a tem.porary light.

What we claim as new and for which we desire Letters Patent of theUnited States, is-

1. The construction and arrangement of a burglar-alarm in such a mannerthat the movement by the burglar.

of the tripping-lever G, that is inserted in the key-hole of the door tobe guarded, shall cause a match to be lighted and a cap or a charge ofpowder in an attached barrel to be fired, substantially as and for thepurpose described.

2 The combination and arrangement of the tripping-lever G with the dog Hand hammer B, substantially as andfor the purpose set forth. I

3. 'The match-holderD F, when constructed as described and used to adjust a match either in front of the vent k or the orifice u,substantially as and for the purpose described.

4. The combination and arrangement of the hammer B, nipple S, and partG, with the match-holder D F in such a manner that the hammer does notstrike the match but fires it by the explosion of the cap, substantiallyas and for the purpose described.

5. The combination and arrangement of the hammer B, nipple s, part C,barrel C, and match-holder D F, substantially as and for the purpose setforth.

6. Securing a burglar-alarm in the key-hole of a door by means of thescrew-button cl 1', substantially as and for the purpose set forth.

'OSCAR M. BROOKS, ROBERT W. SOPER.

Witnesses:

S. D. LOCKE, G. H. WILLISTON,

